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| A mining process in which rock is stripped away to expose mineral deposits near the surface is |
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| A mineral used as a building material |
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| A concentration of mineral fragments at the bottom of a stream bed |
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| one trait of a non metal is |
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| in the process of contact metamorphism, ores form when |
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| magma changes the composition of surrounding rock |
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| scientists hope to build a nuclear fusion reactor fueled by |
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| petroleum forms in permeable rock due to |
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| heat and pressure from layers of sediment |
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| what is the next step in a nuclear reactor after nuclear fission occurs in fuel rods |
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| water is pumped around the fuel rods |
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| the most abundant fossil fuel in the world is |
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| what happens during nuclear fission |
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| the nucleus of a large atom splits into 2 or more smaller nuclei |
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| in a passive solar system energy is collected by |
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| the water for geothermal power plants is heated by |
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| the source of 11% of the united states' electricity is |
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| the energy source in which a dam plays a key role is |
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| metallic minerals, such as gold and silver, that can exist in earths crust as nuggets of pure metal are called |
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| A catalytic converter is a device that |
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| Acid precipitation forms as a result of |
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| Scientists predict that worldwide coal reserves will last |
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| which describes a way to conserve fossil fuels |
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| wash only full loads of laundry |
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| what do scientists predict about world freshwater resources |
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| which is most responsible for destruction of wildlife habitats |
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| rare, nonmetallic minerals with extraordinary brilliance and color are also known as |
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| how is the energy that reaches earth from the sun produced |
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| A process that reduces the amount of damage mining does to ecosystems is |
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| the process by which ores are formed when hot magma meets existing rock and changes the rocks composition is called |
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| coal deposits are formed by |
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| carbonization of plant remains |
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| A heating system that uses solar collectors is a |
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| An energy source that heats fuel rods to create steam for electric generators is |
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| what is released into large amounts when coal with a high sulfur content is burned |
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| the mineral calcite is mainly used for |
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| a fossil fuel formed by the remains of prehistoric organisms in shallow oceans and lakes is |
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| fossil fuels consist mainly of |
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| nodules are recovered during |
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| petroleum and natural gas are most often mined from |
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| permeable sedimentary rock |
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| what is used in an active solar system that is not used in a passive system |
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| a mineral deposit consisting of many veins within a rock formation is |
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| a well that is drilled to reach hot water heated by magma is harnessing |
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| the mineral calcite that is valued for its |
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| an indirect cause of acid rain is |
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| in order to generate electricity, a nuclear reactor converts water to |
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| a mining method in which large buckets are attached to a floating |
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| scientists used the pattern of alternating normal and reversed polarity in rocks to create the geomagnetic |
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| what is the crack in the ocean floor through which magma rises |
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| how does sediment that is closer to a mid ocean ridge compare to sediment that is farther away |
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| magnetic patterns on the ocean floor were puzzling because they |
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| showed alternating bands of normal and reversed polarity |
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| wegeners hypothesis of continental drift was finally confirmed by |
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| evidence supporting the idea of sea floor spreading |
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| tectonic plates can include |
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| both oceanic and continental crust |
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| the pacific ring of fire is |
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| a zone of active volcanoes |
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| the Himalaya mountains were formed in a collision at a |
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| an example of a transform boundary is the |
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| san andreas fault in California |
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| the force exerted by the leading edge of a subducting plate is |
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| what often forms when large terranes and continents collide |
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| Madagascar has unique species of plants and animals because |
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| continent movements separated populations of organisms |
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| modern climates are a result of past movements of |
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| north america and eurasia were formed when a rift separated the continent of |
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| in 150 million years where may los angeles be in relation to san franciscos current location |
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| according to wegener what happened about 250 million years ago |
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| the supercontinent began breaking into smaller continents |
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| which of the following was not a piece of evidence wegener found to support his hypothesis |
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| tracks of continents plowing through ocean floor rock |
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| the study of paleomagnetism was key in proving wegeners hypothesis because |
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| it provided evidence of sea floor spreading |
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| the theory that explains why and how continents move is called |
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| Frequent earthquakes in an area may indicate |
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| tectonic plate boundaries |
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| convection, ridge push, and slab pull work together to produce |
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| constant tectonic plate motion |
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| a terrane becomes part of a continent in a process called |
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| what is one way tectonic plate movement affects climate |
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| it creates mountains that affect wind patterns |
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| the large ocean that surrounded pangaea |
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| the splitting of pangaea into two continents is part of |
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| the most conclusive proof for continental drift was provided by |
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| evidence of sea- floor spreading |
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| to assign ages to sea- floor rocks, scientists used |
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| the geomagnetic reversal time scale |
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| tectonic plates are blocks of |
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| at the center of a mid ocean ridge is |
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| an example of a divergent boundary is |
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| the sea between the arabian peninsula and africa |
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| where do deep ocean trenches form |
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| what occurs at a transform boundary |
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| two plates slide past eachother horizontally |
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| build up heat from the mantle that weakens lithosphere causes |
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| a seamount colliding with a continent and forming a mountain chain on the continent is an example of |
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| one result of collision that formed pangaea |
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| the appalachian mountains |
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